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Authors: Michael SchlottkeLakemper Hans Yu Sven Berger Andreas Lintermann Matthias Meinke Wolfgang Schröder
Publish Date: 2016/10/4
Volume: , Issue: , Pages: 70-81
Abstract
Classic hybrid methods for computational aeroacoustics use different solvers and methods to predict the flow field and the acoustic pressure field in two separate steps which involves data exchange via disk I/O between the solvers This limits the efficiency of the approach as parallel I/O usually does not scale well to large numbers of cores In this work a highly scalable directhybrid scheme is presented in which both the flow and the acoustics simulations run simultaneously That is all data between the two solvers is transferred inmemory avoiding the restrictions of the I/O subsystem Results for the simulation of a pair of corotating vortices show that the method is able to correctly predict the acoustic pressure field and that it is suitable for highly parallel simulationsThe authors would like to thank Ansgar Niemöller and Vitali Pauz for their helpful contributions Furthermore the authors gratefully acknowledge the allocation of supercomputing time as well as the technical support by the High Performance Computing Center Stuttgart HLRS of the University of Stuttgart Germany They also gratefully acknowledge the computing time granted on the supercomputer JURECA 24 and the Gauss Centre for Supercomputing GCS for providing computing time for a GCS LargeScale Project on the GCS share of the supercomputer JUQUEEN 39 at the Jülich Supercomputing Centre JSC of the Forschungszentrum Jülich Germany
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